Pulsed electrohydrodynamic jetting for "Drop-and-place" particle manipulation

Chuan Hua Chen, Dudley A. Saville, Ilhan A. Aksay

Research output: Contribution to conferencePaper

Abstract

Drop-and-place aims at delivering the building blocks of microstructures using colloidal droplets as carrying medium; this approach combines the merits of pick-and-place and self-assembly. Among contemporary techniques used for drop generation, pulsed electrohydrodynamic (EHD) jetting is the only one which can produce on-demand drops with dimensions at least one-order-of-magnitude smaller than the nozzle. Here, we report an experimentally validated model for externally pulsed EHD jetting, and the application of this model in the drop-and-place of an array of colloidal particles. We show that the flow rate is limited by viscous drag in a thin nozzle, which leads to intrinsic pulsations of the conejet. We demonstrate that millimeter-scale nozzles can be utilized to achieve micron-scale positioning accuracy and single-particle dosing accuracy.

Original languageEnglish (US)
Number of pages1
StatePublished - Dec 1 2005
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: Oct 30 2005Nov 4 2005

Other

Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
CountryUnited States
CityCincinnati, OH
Period10/30/0511/4/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Chen, C. H., Saville, D. A., & Aksay, I. A. (2005). Pulsed electrohydrodynamic jetting for "Drop-and-place" particle manipulation. Paper presented at 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase, Cincinnati, OH, United States.